<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
{{info}}
  <!--v-model双向绑定, 让控件的值和变量进行双向绑定, 双向绑定只应用在控件中-->
  <input type="text" v-model="info">
</div>
<script src="js/vue.min.js"></script>
<script>
  let v = new Vue({
    el:"body>div",
    data:{
      info:"双向绑定"
    }
  })
</script>
</body>
</html>